https://www.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/meet-the-heart 2024-04-04T15:34:20.714536152Z Meet the heart! The heart, nestled between the lungs and protected by the rib cage, serves as a powerful pump ensuring blood flow throughout the body. This systemic flow delivers oxygen and nutrients to cells and removes waste. Additionally, the heart manages pulmonary flow, sending blood to the lungs for oxygenation before distributing it to the body. Lastly, the heart's own cells are nourished by coronary blood vessels, part of the systemic flow. Rishi Desai video https://cdn.kastatic.org/ka_thumbnails_cache/788d62ac-0d84-48ee-a35f-2b21e850a2b1_1280_720_base.png Meet the heart! The heart, nestled between the lungs and protected by the rib cage, serves as a powerful pump ensuring blood flow throughout the body. This systemic flow delivers oxygen and nutrients to cells and removes waste. Additionally, the heart manages pulmonary flow, sending blood to the lungs for oxygenation before distributing it to the body. Lastly, the heart's own cells are nourished by coronary blood vessels, part of the systemic flow. https://cdn.kastatic.org/ka-youtube-converted/Vi1JK6IYVt8.mp4/Vi1JK6IYVt8.mp4 609 Blood circulation https://www.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/a/the-heart-is-a-double-pump 2025-06-30T13:27:22.980068417Z The heart is a double pump article